This document provides rules for telling time in English. It states that for o'clock times you say "o'clock", such as "It's nine o'clock". For past times you say the number and "past", like "It's half past three". To times are expressed by subtracting that number of minutes from the next hour, such as "It's twenty to four".

2. REGLA GENERAL
En punto se dice =
O’clock
It’s nine o’clock

3. Past = Y

4. To = Menos

5. Y media se dice = half
past
It´s half past three

6. WHAT TIME IS IT?

10. END